The fourth annual NoCo Hemp Expo this past weekend featured more than 130 vendors and 60 speakers, all sharing information about this amazing plant. Here are ten things we learned about hemp, from its history to its modern-day applications.

1. Hemp enriches the soil where it’s grown.

Hemp has such deep roots that it can easily grow in many different types of soil and terrains. It even holds the soil together, and increases its microbial content. Once the plant is harvested, the stem and leaves are so nutrient-filled that many farmers put what they don’t use back in the soil, which rejuvenates it and results in an even bigger yield the next year.

President Donald Trump has a plan to stop the opioid epidemic, and (surprise!) it doesn’t involve cannabis.

The president’s latest executive order lays out a blueprint for a commission that will address the nation’s opioid epidemic. Drug overdoses are the leading cause of accidental death in this country: The American Society of Addiction Medicine (ASAM) reports that there were 52,404 lethal drug overdoses in 2015, and 2 million people had a prescription pain-abuse disorder.

Cannabis has been widely discussed as an alternative for opioids, but there’s no indication that the commission will consider its medical benefits. In fact, marijuana-hater Chris Christie, governor of New Jersey, has been chosen to chair the commission. Others on the panel include Attorney General Jeff Sessions, another staunch critic of cannabis, as well as Health and Human Services Secretary Tom Price, Veterans Affairs Secretary David Shulkin and Defense Secretary James Mattis, the Washington Post reports.

Shulkin, a physician who also worked with the Obama administration, is the first non-veteran to lead the VA. Despite marijuana’s federal prohibition, he’s said he’s open to discussing whether veterans can participate in state-run marijuana programs.